Uncle's Office Chair
The information related to 'Uncle's Office Chair' mainly involves the price calculation of office chairs and desk-chair combinations in different purchasing scenarios, as detailed below:
In Uncle Li's first purchasing scenario, the price of the chair is known to be 135 yuan, and the price of the desk is 40 yuan more than twice the price of the chair. Based on this condition, the desk price can be calculated as 135ร2 + 40 = 310 yuan. Therefore, the total price of a desk-chair set is the sum of the chair price and the desk price, which is 135 + 310 = 445 yuan. This scenario clearly demonstrates the process of calculating the desk price based on the chair price through a specific multiple relationship and an additional amount, and then deriving the total price of the desk-chair set.
In Uncle Li's second purchasing scenario, he buys 23 sets of office desks and chairs for his company, with each chair priced at 50 yuan, and the total price for the 23 sets is 5290 yuan. From this, the price per set of desks and chairs can be calculated as 5290รท23 = 230 yuan, and then the price of the desk in each set is 230 - 50 = 180 yuan. This scenario focuses on calculating the price per set through the total price and quantity, and then calculating the desk price in combination with the known chair price.
In Uncle Wang's first purchasing scenario, the unit price of the office chair is 40% of that of the desk. Let the unit price of the desk be x yuan, then the unit price of the chair is 0.4x yuan. Since the desk is 300 yuan more expensive than the chair, the equation x - 0.4x = 300 can be listed, and solving for x gives x = 500 yuan, meaning the unit price of the desk is 500 yuan, and then the unit price of the chair is 0.4ร500 = 200 yuan, with the total cost of a desk-chair set being 500 + 200 = 700 yuan. This scenario solves the problem by setting an unknown variable and establishing an equation using the price ratio relationship and price difference.
In Uncle Wang's second purchasing scenario, when the unit price of the office desk is 560 yuan, and the desk is 360 yuan more expensive than the chair, then the unit price of the chair is 560 - 360 = 200 yuan. This scenario directly calculates the chair price based on the desk price and the price difference between the two.
